83988420420 has 96 divisors (see below), whose sum is σ = 247641609600. Its totient is φ = 21209831424.

The previous prime is 83988420367. The next prime is 83988420421. The reversal of 83988420420 is 2402488938.

It is a self number, because there is not a number n which added to its sum of digits gives 83988420420.

It is not an unprimeable number, because it can be changed into a prime (83988420421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3221196 + ... + 3247164.

It is an arithmetic number, because the mean of its divisors is an integer number (2579600100).

Almost surely, 2^83988420420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83988420420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123820804800).

83988420420 is an abundant number, since it is smaller than the sum of its proper divisors (163653189180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83988420420 is a wasteful number, since it uses less digits than its factorization.

83988420420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28837 (or 28835 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 83988420420 in words is "eighty-three billion, nine hundred eighty-eight million, four hundred twenty thousand, four hundred twenty".